Redispersion Microreactor System for Phase Transfer Catalyzed Esterification

J. Jovanovic, W. Hengeveld, Evgeny Rebrov, T.A. Nijhuis, V. Hessel, J.C. Schouten

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


An interdigital mixer - redispersion capillary assembly was applied to prevent the liquid-liquid bubbly flow coalescence in microreactors. The redispersion capillary consisted of 1 mm long and 0.25 mm inner-diameter constrictions placed every 0.50 m along the channel length. The system was tested on the phase transfer catalyzed esterification to produce benzyl benzoate. The application of constrictions to prevent coalescence resulted in a better reproducibility compared to a capillary without the constrictions. By controlling the total flow rate and the aqueous-to-organic ratio the bubbly flow surface-volume ratio could be increased up to 230 700 m(2)m(-3). Compared to the conventional phase transfer catalyzed esterification, the continuous operation in the interdigital-redispersion capillary assembly eliminated the use of solvents and bases, removing an energy intensive step of distillation, while increasing process safety.
Original languageEnglish
Pages (from-to)1096-1106
Number of pages11
Issue number7
Publication statusPublished - Jul 2011

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)
  • Industrial and Manufacturing Engineering


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